Ratcheting screwdriver thumb actuator



FIG. 1 is a top perspective view of a ratcheting screwdriver thumb actuator;

FIG. 2 is a front perspective view of the thumb actuator of FIG. 1;

FIG. 3 is a front elevation of the thumb actuator of FIG. 1; and,

FIG. 4 is a side elevation of the thumb actuator of FIG. 1.

The broken lines shown above the actuator and on the grip in FIGS. 1, 2, and 4 illustrate environment and form no part of the claimed design. The broken lines shown just below the “scalloped” feature in FIG. 4 illustrate a portion of the design that also forms no part of the claim. 

The ornamental design for a ratcheting screwdriver thumb actuator, as shown and described. 